<template>
    <div>
        <div class="crumbs">
           <el-breadcrumb separator="/">
                <el-breadcrumb-item><i class="el-icon-lx-calendar"></i> 表单</el-breadcrumb-item>
                <el-breadcrumb-item >图片上传</el-breadcrumb-item>
            </el-breadcrumb>
       </div>
        <div class="container">
            <div class="content-title">支持拖拽</div>
            <div class="plugins-tips">
                Element UI自带上传组件。
                访问地址：<a href="http://element.eleme.io/#/zh-CN/component/upload" target="_blank">Element UI Upload</a>
            </div>
            <el-upload
            class="upload-demo"
            drag
            action="https://jsonplaceholder.typicode.com/api/posts/"
            multiple>
                <i class="el-icon-upload"></i>
                <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
                <div class="el-upload__tip" slot="tip">只能上传jpg/png文件，且不超过500kb</div>
            </el-upload>
            <div class="content-title">支持裁剪</div>
            <div class="plugins-tips">
                vue-cropperjs：一个封装了 cropperjs 的 Vue 组件。
                访问地址：<a href="https://github.com/Agontuk/vue-cropperjs" target="_blank">vue-cropperjs</a>
            </div>
            <div class="crop-demo">
                <img :src="cropImg" class="pre-img">
                <div class="crop-demo-btn">选择图片
                    <input class="crop-input" type="file" name="image" accept="image/*" @change="setImage">
                </div>
            </div>
            <el-dialog
            title="裁剪图片"
            :visible.sync="dialogVisible"
            width="30%"
            >
                <vue-cropper ref="cropper" :src="imgSrc" :ready="cropImage" 
                :zoom="cropImage" :cropmove="cropImage" style="width:100%;height:300px;"></vue-cropper>
                <span>这是一段信息</span>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="cancelCrop">取 消</el-button>
                    <el-button type="primary" @click="dialogVisible = false">确 定</el-button>
                </span>
            </el-dialog>
        </div>
    </div>
</template>
<script>
import VueCropper from "vue-cropperjs";
import { constants } from 'zlib';
export default {
    data(){
        return{
            defaultSrc: require('../assets/img/img.jpg'),
            fileList: [],
            imgSrc: '',
            cropImg: '',
            dialogVisible: false,
        }
    },
    components: {
        VueCropper
    },
    methods: {
        setImage(e){
            const file = e.target.files[0];
            if(!file.type.includes('image/')){
                return;
            }
            const reader = new FileReader();
            reader.onload = (event) => {
                this.dialogVisible = true;
                this.imgSrc = event.target.result;
                this.$refs.cropper && this.$refs.cropper.replace(event.target.result);
            };
            reader.readAsDataURL(file);
        },
        cropImage() {
            this.cropImg = this.$refs.cropper.getCroppedCanvas().toDataURL();
        },
        cancelCrop(){
            this.dialogVisible = false;
            this.cropImg = this.defaultSrc;
        },
        imageuploaded(res){
            console.log(res)
        },
        handleError(){
            this.$notify.error({
                title: '上传失败',
                message: '图片上传接口失败，可更改为自己的服务器接口'
            });
        }
    },
    created(){
        this.cropImg = this.defaultSrc;
    }
}
</script>
<style scoped>
.content-title{
    font-weight: 400;
    line-height: 50px;
    margin: 10px 0;
    font-size:  22px;
    color: #1f2f3d;
}
.pre-img {
    width: 100px;
    height: 100px;
    background: #f8f8f8;
    border: 1px solid #eee;
    border-radius: 5px;
}
.crop-demo {
    display: flex;
    align-items: flex-end;
}
.crop-demo-btn {
    position: relative;
    width: 100px;
    height: 40px;
    line-height: 40px;
    padding: 0 20px;
    margin-left: 30px;
    background-color: #409eff;
    color: #fff;
    font-size: 14px;
    border-radius: 4px;
    box-sizing: border-box;
}
.crop-input{
    position: absolute;
    width: 100px;
    height: 40px;
    left: 0;
    top: 0;
    opacity: 0;
    cursor: pointer;
}
</style>


